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Spherical Bridge Bearing - Low Friction and Excellent Accommodation Feature
Spherical bridge bearing, also called spherical bearing, spherical bearing pad, is designed to ensure vertical and horizontal forces transferring under control which is a connection devices between superstructures and substructures. It consists of steel plate enclosed with edge sliding guide and stainless steel panel for sliding controlling, under the stainless steel panel is a PTFE sheet, which is recessed into the steel to a depth and contains a special lubricant to ensure permanent lubrication of the sliding surfaces. Then there is a stainless steel panel with a convex bottom face to facilitate rotations. The bottom component is concave steel plate that covered with a recessed PTFE sheet to transfer whether horizontal or vertical forces safely.
Features:
1> With low-profile yet high loading capability over 50,000 KN.
2> Maximized shearing strength of elastomer pad through encasing its steel pot.
3> Allow for large rotations ranging from 0 to 0.03 rad.
4> Low friction coefficient between 1% and 3%.
5> Excellent fatigue, impact and aging resistance of the layer of PTFE.
6>All the metallic parts are protected against corrosion by galvanization and epoxy painting according to EN 1337-9 (other protective coatings are available as your requirements).
7> Easy to maintain and replace the worn out and broken part. Easy and quick to install.
8> Complying with BS EN-1337, KS4424, AASHO, ISO or other custom standards.
Applications:
1> Incrementally launched bridges.
2> Curved or skewed bridges.
3> Structures with rotations in various directions.
4> Structures using the incremental launching methods.
5> Highways and railways, etc.
Classification
The spherical bridge bearings are classified into three types according to different sliding direction.
| Material | Steel and PTFE sliding plate. |
| Working temperature range | Normal type: -25 °C to +60 °C. Cold resistant type: -40 °C to +60 °C. |
| Friction coefficient | (In condition of PTFE layer with silicon grease lubrication and stresses about 30 MPa) Normal temperature: 0.03. Low temperature: 0.05. |
| Bearing horizontal force | Guided type: Horizontal force is 10% vertical bearing capacity. Fixed type: horizontal force is 10% vertical bearing capacity. |
| Vertical bearing capacity | 1000, 1500, 2000, 2500, 3000, 4000, 5000, 6000, 8000, 9000, 10000, 12500, 15000, 17500, 2000 kN. |
| Displacement | In longitudinal direction 1000-2500 kN, 50/100 mm. 3000-20000 kN, 50/100/150 mm. In transverse direction: ± 40 mm. |
| Popular specifications | Fixed type spherical bridge bearing. Guided type spherical bridge bearing. Free sliding type spherical bridge bearing. |
Hengshui Jingtong Rubber Co., Ltd. is a professional manufacturer of rubber products which are used in road and bridge, tunnel, water conservancy, electric power, railway, etc.
1. Hengshui Jingtong Engineering Rubber Co.,Ltd. is located in Hengshui City development Zone, covering an area of 98000 square meters, construction area of 45000 square meters, with more than 20 professional senior technical personnel.
2. There are 10 series, over 200 species and more than 2,000 specifications. Our main series include rubber water-stop series, rubber pipe plugs, and bridge rubber bearing series, etc.
3. Our engineering rubber products include: rubber waterproof stops, plate type bridge rubber bearings, pot type bridge rubber pneumatic molds/Gasbag inner molds, bridge expansion joints, rubber pipe bulges, etc.
All products have been authenticated by the Ministry of Communications, the Ministry of Railway and the Ministry of Water Conservancy, and have been authenticated with International Quality System Certificate.
Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. Hengshui Jingtong Engineering Rubber, your best choice!
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